usort returning unpredicable results
I have an array of objects returned from a database. A print_r on the unsorted array looks like this:
Array
(
[0] => stdClass Object
(
[nid] => 53162
[title] => Kroger 'Giving Hope' Standee
[path] => node/53162
)
[1] => stdClass Object
(
[nid] => 64185
[title] => Kroger 'Giving Hope' Stanchion Sign
[path] => node/64185
)
[2] => stdClass Object
(
[nid] => 52190
[title] => Betty Crocker Kroger 'Giving Hope' Shipper
[path] => node/52190
)
[3] => stdClass Object
(
[nid] => 53159
[title] => Frito-Lay Kroger 'Giving Hope' Packaging
[path] => node/53159
)
[4] => stdClass Object
(
[nid] => 53164
[title] => Nabisco Kroger 'Giving Hope' Violator
[path] => node/53164
)
[5] => stdClass Object
(
[nid] => 52607
[title] => Doritos Kroger 'Giving Hope' Packaging
[path] => node/52607
)
[6] => stdClass Object
(
[nid] => 52720
[title] => Kroger Big K Cola 'Giving Hope' Packaging
[path] => node/52720
)
[7] => stdClass Object
(
[nid] => 52729
[title] => Windex Kroger 'Giving Hope' Packaging
[path] => node/52729
)
[8] => stdClass Object
(
[nid] => 52731
[title] => Ziploc Kroger 'Giving Hope' Packaging
[path] => node/52731
)
[9] => stdClass Object
(
[nid] => 53157
[title] => Stacy's Kroger 'Giving Hope' Cut Cases
[path] => node/53157
)
)
I want to sort the array by the nid property, so I used a custom usort function (found here.)
function my_search_sort($a, $b) {
strcmp($a->nid, $b->nid);
}
I called it like this:
usort($docs, 'my_search_sort');
and then did another print_r. The results look like this:
Array
(
[0] => stdClass Object
(
[nid] => 52720
[title] => Kroger Big K Cola 'Giving Hope' Packaging
[path] => node/52720
)
[1] => stdClass Object
(
[nid] => 52729
[title] => Windex Kroger 'Giving Hope' Packaging
[path] => node/52729
)
[2] => stdClass Object
(
[nid] => 52731
[title] => Ziploc Kroger 'Giving Hope' Packaging
[path] => node/52731
开发者_JAVA技巧 )
[3] => stdClass Object
(
[nid] => 53157
[title] => Stacy's Kroger 'Giving Hope' Cut Cases
[path] => node/53157
)
[4] => stdClass Object
(
[nid] => 52607
[title] => Doritos Kroger 'Giving Hope' Packaging
[path] => node/52607
)
[5] => stdClass Object
(
[nid] => 53164
[title] => Nabisco Kroger 'Giving Hope' Violator
[path] => node/53164
)
[6] => stdClass Object
(
[nid] => 64185
[title] => Kroger 'Giving Hope' Stanchion Sign
[path] => node/64185
)
[7] => stdClass Object
(
[nid] => 52190
[title] => Betty Crocker Kroger 'Giving Hope' Shipper
[path] => node/52190
)
[8] => stdClass Object
(
[nid] => 53159
[title] => Frito-Lay Kroger 'Giving Hope' Packaging
[path] => node/53159
)
[9] => stdClass Object
(
[nid] => 53162
[title] => Kroger 'Giving Hope' Standee
[path] => node/53162
)
)
It's obviously doing something, but it's not sorting in ascending order according to nid. What do I need to do to get that to work?
Your custom sort function needs to return the value:
function my_search_sort($a, $b) {
return strcmp($a->nid, $b->nid);
}
EDIT I've updated the code on the other answer you referenced, it was incorrect.
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